<template>
  <view class="cart-container" v-if="cart.length !== 0">
    
    <!-- 收获地址组件 -->
    <my-address></my-address>
    
    <!-- 商品列表的标题区域 -->
    <view class="cart-title">
        <!-- 左侧的图标 -->
        <uni-icons type="shop" size="18"></uni-icons>
        <!-- 右侧的文本 -->
        <text class="cart-title-text">购物车</text>
    </view>
    
    <!-- 循环渲染购物车中的商品信息 -->
    <!-- 无滑动删除效果 -->
  <!--  <block v-for="(goods,i) in cart" :key="i">
      <my-goods :goods="goods" :show-radio="true" :show-num="true" @radio-change="radioChangeHandler"
              @num-change="numberChangeHandler"
      ></my-goods>
    </block> -->
    
    <!-- 滑动删除效果 -->
    <uni-swipe-action>
      <block v-for="(goods,i) in cart" :key="i">
         <uni-swipe-action-item :right-options="options" @click="swipeItemClickHandler(goods)">
             <my-goods :goods="goods" :show-radio="true" :show-num="true" @radio-change="radioChangeHandler"
                      @num-change="numberChangeHandler"
              ></my-goods>
          </uni-swipe-action-item>
      </block>
    </uni-swipe-action>
    
    <!-- 使用自定义的结算组件 -->
    <my-settle></my-settle>
  </view>
  
  <!-- 空白购物车的区域 -->
 <view class="empty-cart" v-else> 
      <image src="/static/cart_empty@2x.png" class="empty-img"></image>
      <text class="tip-text">空空如也~</text>
      
  </view>
  
  
  
</template>

<script>
  
  import badgeMix from '@/mixins/tabbar-badge.js'
  import { mapState, mapMutations } from 'vuex'  
  
  export default {
    mixins: [badgeMix],
    computed: {
        ...mapState('m_cart',['cart'])
    },
    data() {
      return {
        options: [{
          text: '删除',
          style: {
            backgroundColor: '#C00000'
          }
        }]
      }
    },
    methods:{
      ...mapMutations('m_cart',['updateGoodsState','updateGoodsCount','removeGoodsById']),
      radioChangeHandler(e){
        this.updateGoodsState(e)
      },
      numberChangeHandler(e){
          this.updateGoodsCount(e)
      },
      swipeItemClickHandler(goods){
        this.removeGoodsById(goods.goods_id)
      }
    }

  }
</script>

<style lang="scss">
  
  .cart-container{
    padding-bottom: 50px;
  }
  
  
.cart-title{
  height: 40px;
  display: flex;
  align-items: center;
  padding-left: 5px;
  border-bottom: 1px solid #efefef;
  
  
  
  .cart-title-text{
    font-size: 14px;
    margin-left: 10px;
  }


}

.empty-cart{
  display: flex; 
  flex-direction: column;
  align-items: center;
  padding-top: 150px;
  .empty-img{
    width: 90px;
    height: 90px;
  }
  .tip-text{
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
  
  
  
}  










</style>
